I started using magnum primers in my .308. Seems to work well. To answer the question above. There is nothing wrong with using mag primers in everything. You just have to adjust powder combos a little to match up. A max load in a manual will be a little lower when using a mag primer.

Tank

__________________
Matthew 7:13-14
"Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it. [14] But small is the gate and narrow the road that leads to life, and only a few find it.

Lapua sells 308 brass with the small rifle primer. I believe it also has a smaller primer hole. This is for the target shooters who need premium accuracy. So the way I see it is that a hotter than necessary primer might mess with accuracy, SD and/or ES.

Lapua sells 308 brass with the small rifle primer. I believe it also has a smaller primer hole. This is for the target shooters who need premium accuracy. So the way I see it is that a hotter than necessary primer might mess with accuracy, SD and/or ES.

That is a good point and I am inclined to agree with your line of thought.